Quantum dot color filter ink compositions and devices utilizing the same
AssigneeKateeva, Inc.
InventorsConor F. Madigan, Siddharth Harikrishna-Mohan, Florian Pschenitzka, Teresa A. Ramos, Inna Gurevitch
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Abstract
Liquid ink compositions containing quantum dots for optoelectronic display applications are provided. Also provided are solid films formed by drying the ink compositions, optical elements incorporating the solid films, display devices incorporating the optical elements, and methods of forming the solid films, optical elements, and the devices. Liquid ink compositions and solid films made by drying the liquid ink compositions include one or more blue light-absorbing materials in combination with red light-emitting QDs or green light-emitting QDs.
Claims20
A method of forming a color filter for an optoelectronic device having a blue light source, the method comprising:
- depositing an ink composition on a substrate that is in the optical path of the blue light source;
- and
- curing the ink composition into a solid film, the ink composition comprising:
- 10 wt. % to 94.99 wt. % di(meth)acrylate monomers or a combination of di(meth)acrylate monomers and mono(meth)acrylate monomers;
- 4 wt. % to 10 wt. % multifunctional (meth)acrylate crosslinking agent;
- 1 wt. % to 50 wt. % red-emitting quantum dots or green-emitting quantum dots;
- and
- 0.01 wt. % to 85 wt. % of a blue light-absorbing material, the blue light-absorbing material characterized in that it preferentially absorbs blue light relative to red light or green light, wherein the solid film has an optical density, at a wavelength of 450 nm, of at least 1.0.
A method of forming a color filter for an optoelectronic device having a blue light source, the method comprising:
- depositing an ink composition on a substrate that is in the optical path of the blue light source;
- and
- curing the ink composition into a solid film having red sub-pixels and green sub-pixels, the ink composition comprising:
- 10 wt. % to 94.99 wt. % di(meth)acrylate monomers or a combination of di(meth)acrylate monomers and mono(meth)acrylate monomers;
- 4 wt. % to 10 wt. % multifunctional (meth)acrylate crosslinking agent;
- 1 wt. % to 50 wt. % red-emitting quantum dots for the red sub-pixels and 1 wt. % to 50 wt. % green-emitting quantum dots for the green sub-pixels;
- and
- 0.01 wt. % to 85 wt. % of a blue light-absorbing material, the blue light-absorbing material characterized in that it preferentially absorbs blue light relative to red light or green light, wherein the solid film has an optical density, at a wavelength of 450 nm, of at least 1.0.
A method of forming a color filter for an optoelectronic device having a blue light source, the method comprising:
- depositing an ink composition on a substrate that is in the optical path of the blue light source to form a first layer containing red-emitting quantum dots, a second layer containing green-emitting quantum dots, and a third layer containing a blue light-absorbing material;
- and
- curing the deposited layers into a solid film having red sub-pixels and green sub-pixels, the ink composition comprising:
- 10 wt. % to 94.99 wt. % di(meth)acrylate monomers or a combination of di(meth)acrylate monomers and mono(meth)acrylate monomers;
- 4 wt. % to 10 wt. % multifunctional (meth)acrylate crosslinking agent;
- 1 wt. % to 50 wt. % red-emitting quantum dots for the red sub-pixels and 1 wt. % to 50 wt. % green-emitting quantum dots for the green sub-pixels;
- and
- 0.01 wt. % to 85 wt. % of a blue light-absorbing material, the blue light-absorbing material characterized in that it preferentially absorbs blue light relative to red light or green light, wherein the solid film has an optical density, at a wavelength of 450 nm, of at least 1.0.
Dependencies are inferred from the claim text.